This mine will NOT grow beyond 200TH, these are essentially PMBs. If you bought at IPO, you'll get your ROI but if you're buying now, you're only giving your money away. IPO investors basically paid for R&D of Bitfury's "shovel"; in turn, they get a discounted "shovel" at a later date.
Unless you are one of the founders, you have absolutely no idea what the end-goal of the project is. It's up to the founders to motion for altering the parameters just as they switched the hashing power from 100-200TH at one point they can choose to alter the project goals with share holder approval at any time.
There's no plan to add more power and it would be in direct contradiction with the business plan any shareholders should have read (see picostocks site).
As the shares are not voting shares there's no way the business plan could change without violating the contract between the mine and it's shareholders. If the founders kept some revenue to reinvest shareholders would be entitled to ask for this revenue back: it just can't happen.