kinda simple but difficult to answer... but since this technology is complete for the time being... so it seems there is no need for further developers or any forks (secures those that store coins in cold storage).

PoS = percentage = supply unlimited.  around~ .004 TRI reward for block found.  close to only 10,000 TRI are created every year.

chances of catching reward DEPENDS on how many coins others unlocked and are staking and how they are securing the network.
for example a big bag holder can coin control and coin age coins as to let smaller bags catch rewards BUT that is not how a coin holder work with TRIANGLES...  so... my answer is No.  You should look for another PoS coin to secure.  200 TRI would stake maybe .5 or 1 TRI a week if you are securing while big bags are taking a break (if ever)(no guarantees).  I've had 1200 TRI staking up against over 10000 TRI and barely catching a reward within 4 hours. 

NO do not secure TRI, not worth having TRI if you cannot catch a stake, so not worth securing a coin that doesn't let people secure the network.  But that is how greedy pieces of shit humans work.  Garbage.  When a big bag holder catches all rewards then there is no reason securing network with big bag holders that gives no shit about the network or others and they themselves want to find all the blocks.  This coin is basically garbage because of that FACT.

the developer did a masterful job with the last fork... and the last fork in 2014 is still better than majority of coins that exist.  TRI got delisted from Bittrex and the development team's work on TRIDER was wasted.  since then this coin went to hibernation while the technology is in my opinion... still one of the best coins ever to exist.