I think a great addition to the summon portal would be an acension item summon. Similar to the EHT and ETT. An Epic Item Token that would give the chance of 3* or 4* acension items.
Nice idea. Except that SG does not find any incentive unless that epic ascension token can be sold by them. 4* ascension mats may be obtained at 5%, 3* ascension mats at 10% including the farmable ones, 2* ascension mats at 20%, and 1* ascension mats at 65%