Is there scope or plans for adding any other stable coins options to eXch in the future? DAI and USDT are available on the Ethereum blockchain but are there any plans to spread out further say to TRC-20?
About TRC-20 stablecoins, they have already written in this thread in November that they're perhaps interested, see
here. They're however generally sceptical regarding Tron.
As for other Ethereum alternatives with stablecoins, in the same post they wrote about Polygon too (they were considering adding it, but sceptical due to the high fees close to Ethereum's, which may have
changed), and
this post probably means that they're not eager to add Avalanche, although the post is related to a bridge, not to stablecoins.
(I answer here just because I remembered these posts exch made in November.)