This chapter discusses consequences of the analysis presented in Chaps. 4 and 5 by extending it to several other languages or linguistic phenomena than what we have already looked at. Our discussions will show how the ordering restrictions on Mandarin RCs and their other seemingly “peculiar” behaviors may be explained under the proposed OT-based analysis; how cross-linguistic variation on DEM meanings may be captured within a binary feature-based framework; whether all languages have supplementary RCs or not and if not, what type of languages tend to have them; what might be the internal syntax of DemPs in all human languages and whether a uniform analysis may be possible for them; how Korean CogDem KU and Slovenian determiner-like lexeme ta compare with each other and whether the cognitive indexical analysis of KU presented in Chap. 5 can be carried over to ta. The chapter ends by taking up two additional issues relevant for our purposes, namely, factors determining the interpretative possibilities of adnominal APs and the number of focus positions inside a DP.