What would this do to the value of coins? I have ~2.7 coins (Can hit three by morning or noon tomorrow).
Sell or keep?
Keep. Or invest
What with this 25 coin blocks I've heard about and the ASIC's, will coins be worth more or less later on?
Speculation is pointed toward "worth more".
First, ignoring the 25 coin blocks, value spikes down for a week to two weeks before climbing up and stabilizing at around 175-300% of what value is now.
The trade off would be the payout rate would be lower due to higher difficulty. So basically, close to the same rate in USD per (unit of time), but you get larger, less frequent pay-outs.
So, I've read this statement a number of times and I'm not entirely sure what you're assuming. Payout rate would be lower due to higher difficulty? Larger, less frequent payouts?
Second, with the 25 coin blocks. The lower block requirement allows solo miners to dominate the market, since it would mean it would be less than eight months for payout with a Jalapeno or similar, which lowers pool reliability, and potentially cuts out a sizable portion of the lower-end miners. Part-time gamers with one or two GPU's that they run at night and during work/school to fund more games (Like me) would walk away before putting more wear on their system since it won't be worth it.
A split in the reward (from 50 to 25) doesn't correlate to block "requirements"...that's where difficulty comes in. Everything about mining bitcoins will be exactly the same as it is now, except instead of receiving 50 Bitcoins when you find a block, you get 25 instead.
Last guess is that the system is not prepared for such a large power increase and will tank down to about that of the USD (I'd say $2-3) for a few months before rising back to about ~$15 after many people stop mining. However, if people are still making money (Even a little) and aren't being inconvenienced, they'll likely keep their ASIC running, so it could bottom out and stay there, which, provided the coins come faster, is perfectly fine.
A chicken is worth a chicken, whether you value it at $35 USD or 200 CNY.
The opposite actually. The "system" is very much prepared (and lustfully anticipating) the large power increase. The price won't get lower than it is now unless large sums of bitcoins are dumped into markets...and then those of us on the forums will spend time buying them all back up
Overall, you're missing out on quite a substantial bit of information. I'd suggest searching and reading through the majority of Mining Speculation and Economic Speculation posts...they'll have answers to pretty much all of your questions.